Abstract:
:Bacteria of the genus Klebsiella are important opportunistic pathogens responsible for nosocomial infections that are increasingly resistant to antimicrobial agents. Distinctive identification of the species K. oxytoca, K. pneumoniae, K. planticola, K. ornithinolytica and K. terrigena is difficult based on phenotypic tests and misidentifications are frequent in routine clinical microbiology. We developed a specific method to discriminate K. oxytoca from the other species of the genus Klebsiella, based on the PCR amplification of the polygalacturonase (pehX) gene. A PCR amplicon of 344 bp was obtained in all 35 K. oxytoca strains tested, but in none of the 29 K. pneumoniae, 12 K. planticola/K. ornithinolytica and 7 K. terrigena strains tested. The test was also negative for polygalacturonate-degrading species of the genus Erwinia. Analysis of 24 strains designated as K. pneumoniae from international collections (NCTC, PZH) revealed previous misidentification of six K. oxytoca strains. Key biochemical tests fully confirmed the pehX PCR results. The new K. oxytoca identification assay should be useful for both clinical and ecological monitoring of K. oxytoca strains, as well as for controlling the previous identification of collection strains.
journal_name
Res Microbioljournal_title
Research in microbiologyauthors
Kovtunovych G,Lytvynenko T,Negrutska V,Lar O,Brisse S,Kozyrovska Ndoi
10.1016/S0923-2508(03)00148-7subject
Has Abstractpub_date
2003-10-01 00:00:00pages
587-92issue
8eissn
0923-2508issn
1769-7123pii
S0923-2508(03)00148-7journal_volume
154pub_type
杂志文章abstract::The Escherichia coli mannitol permease (EIIMtl) of the phosphoenolpyruvate-dependent phosphotransferase system is a 68-kDa membrane protein that carries out the concomitant transport and phosphorylation of D-mannitol. Previous studies indicated that there are ca. 6 membrane-spanning helices within the N-terminal half ...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/0923-2508(92)90003-7
更新日期:1992-02-01 00:00:00
abstract::DNA-DNA hybridization showed that the Brucella strains recently isolated from marine mammals belong to the monospecific genus Brucella (more than 77% DNA relatedness). Ribotyping (HindIII rDNA restriction patterns) showed that they may represent a separate subgroup (marine type) specifically associated with marine mam...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/s0923-2508(00)01145-1
更新日期:2000-11-01 00:00:00
abstract::Although this volume is dedicated to honoring François Jacob, I would like my contribution to broaden the context by recalling the background within which the scientists of those times operated. The specific scientific accomplishments of Jacob will certainly be covered by the other contributors who collaborated with h...
journal_title:Research in microbiology
pub_type: 传,历史文章,杂志文章
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更新日期:2014-06-01 00:00:00
abstract::A new type of nitrogen-fixing, oxalate-oxidizing Azospirillum sp. was isolated from the roots of Oxalis pes-caprae. Polyphasic taxonomy was performed, including auxanography using API galleries, physiological tests and 16S rRNA sequence comparison. Optimum growth occurred at 30 degrees C, pH 7.5. Growth was observed a...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2004.10.009
更新日期:2005-04-01 00:00:00
abstract::Translation termination in eukaryotes is mediated by two polypeptide chain-release factors, eRF1 and eRF3. eRF1 recognizes stop signals, while eRF3 is a ribosome-dependent and eRF1-dependent GTPase. eRF1 forms a stable complex with eRF3 in vivo and in vitro. In the present study, a variety of truncated forms of Euplot...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2006.07.005
更新日期:2006-11-01 00:00:00
abstract::Paralytic shellfish toxins (PSTs) are sodium channel blocking (SCB) toxins, produced by cyanobacteria, as well as by marine dinoflagellates and their associated bacteria, and cause serious health and economic concern worldwide. In a previous study, approximately 70% of the bacteria enriched from PST-contaminated shell...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/s0923-2508(02)01328-1
更新日期:2002-07-01 00:00:00
abstract::Infections caused by Staphylococcus aureus are prevalent. The dramatically reduced discovery of new antibiotics, as well as the persistent emergence of resistant bacteria, represents a major health problem in both hospital and community settings. Using antibiotic enhancers to rescue existing classes of antibiotics is ...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2016.08.002
更新日期:2017-01-01 00:00:00
abstract::Bacteriophages must destroy the bacterial cell wall to lyse their host and release their progeny into the environment. There are at least two distinct mechanisms by which phages destroy the cell wall. Bacteriophages with large genomes use a holin-endolysin system, while bacteriophages with small genomes encode a singl...
journal_title:Research in microbiology
pub_type: 杂志文章,评审
doi:10.1016/s0923-2508(02)01330-x
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journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2016.04.012
更新日期:2016-07-01 00:00:00
abstract::A total of 28 species of Legionella could be differentiated by rRNA gene restriction patterns generated after cleavage of total DNA with either EcoRV or HindIII restriction endonucleases, and hybridization of fragments with 32P-labelled Escherichia coli 16 + 23S rRNA. Different species gave different fragment patterns...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/0923-2508(89)90193-9
更新日期:1989-11-01 00:00:00
abstract::Microcin E492 (MccE492) is an antibacterial protein whose activity on target cells requires ManYZ, the inner membrane component of the mannose permease. We show here that MceA, the polypeptide core of MccE492, stably associates with ManYZ both in the presence and in the absence of MceB, the MccE492 immunity protein. T...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2010.07.003
更新日期:2010-10-01 00:00:00
abstract::General and regulated proteolysis in bacteria is crucial for cellular homeostasis and relies on high substrate specificity of the executing AAA+ proteases. Here we summarize the various strategies that tightly control substrate degradation from both sides: the generation of accessible degrons and their specific recogn...
journal_title:Research in microbiology
pub_type: 杂志文章,评审
doi:10.1016/j.resmic.2009.08.018
更新日期:2009-11-01 00:00:00
abstract::The rRNA gene restriction patterns of 89 Vibrio cholerae O1 isolates from different geographic origins were studied. The probe was Escherichia coli 16 + 23S rRNA labelled with "ECL Gene detection system". A total of 17 rRNA gene restriction patterns were observed after BglI cleavage. Four patterns (B1 to B4) were only...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/0923-2508(90)90059-y
更新日期:1990-07-01 00:00:00
abstract::Production of aerobactin has been reported to be a virulence factor in members of the family Enterobacteriaceae. To investigate the protection afforded by humoral immunity directed towards aerobactin in infectious diseases caused by aerobactin-producing strains, we tested the efficacy of mAbAERO1, a murine monoclonal ...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/0923-2508(96)80894-1
更新日期:1995-02-01 00:00:00
abstract::Sub-MIC antibiotics differentially modulate transcription of subsets of genes by unknown mechanisms. Paradoxically, the RNA polymerase inhibitor rifampicin is able to both upmodulate as well as downmodulate transcription when present at sub-MIC levels. In this study, we analyzed DNA sequences required for transcriptio...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2013.02.003
更新日期:2013-06-01 00:00:00
abstract::Bacterial membranes are known to form domains with specific lipid compositions and functions. Recently, using membrane binding fluorescent dyes, lipid spiral structures extending along the long axis of the cell were detected. These spirals were absent when the synthesis of phosphatidylglycerol and cardiolipin was disr...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2010.07.006
更新日期:2010-11-01 00:00:00
abstract::Pseudomonas mendocina carrying a novel class 1 integron containing an IMP-8 gene was isolated from an inanimate surface in a female ward sanitary facility of the Hospital Infante D. Pedro, Aveiro, Portugal. Hybridization with the integrase gene (intI1) and 16S rDNA revealed that the integron is chromosomally located. ...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2010.03.004
更新日期:2010-05-01 00:00:00
abstract::Jarosite precipitates formed in iron oxidising bioreactors have been shown to harbour iron-oxidisers. The aim of this study was to develop an iron oxidising bioprocess where microorganisms are retained solely on biogenic jarosite particles. Based on preliminary experiments using a fluidised-bed bioreactor (FBR), the f...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2020.06.004
更新日期:2020-01-01 00:00:00
abstract::The marine psychrophilic bacterium Moritella viscosa is the causative agent of winter ulcer in farmed Atlantic salmon and cod. In this study, the growth requirements of the pathogen were established. The effects of changes in salinity and temperature on growth, surface features and proteomic regulation were also inves...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2006.11.014
更新日期:2007-04-01 00:00:00
abstract::Six genes encoding cold-shock-like proteins, including cspE, are contained within the genome of Acinetobacter oleivorans DR1. All six genes are similar in size as well as amino acid identity, but appear to be differentially regulated under stressful conditions. Four of these genes (cspA, cspB, cspC and cspE) were func...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2018.04.011
更新日期:2018-01-01 00:00:00
abstract::We present evidence that there are at least three Aspergillus nidulans enzymes which catalyze in vitro the reaction of O-acetylserine (OAS) with sulfide forming cysteine. This activity is shared by cysteine synthase (CS) encoded by the cysB gene, homocysteine synthase encoded by cysD and by at least one more enzyme. M...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2007.03.002
更新日期:2007-06-01 00:00:00
abstract::Azo dye derivatives of azobenzene constitute the largest group of dyes used in the textile industry and possess recalcitrant chemical groups, such as those of azo and sulphonic acid. Some microorganisms are able to degrade these aromatic compounds. In the present work, decolourisation of culture media containing azo d...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/s0923-2508(02)01332-3
更新日期:2002-07-01 00:00:00
abstract::Quorum sensing is a cell-density-dependent regulatory mechanism which, in Gram-negative bacteria, usually involves the production and detection of N-acyl homoserine lactones (HSLs). In the last four years HSL-dependent quorum sensing has been identified in members of the Burkholderia cepacia complex, and this mini-rev...
journal_title:Research in microbiology
pub_type: 杂志文章,评审
doi:10.1016/j.resmic.2004.01.006
更新日期:2004-05-01 00:00:00
abstract::Nisin production by Lactococcus lactis subsp. lactis has been investigated using lactose as carbon source. Whether or not continuous cultures were lactose-limited, maximum nisin titre was observed at an intermediate mu value with a sharp peak of activity between 0.2 and 0.3/h. The maximum specific growth rate obtained...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/0923-2508(92)90075-y
更新日期:1992-11-01 00:00:00
abstract::Microbial transformation of arsenic species and their interaction with the carbon cycle play a major role in the mobility of this toxic metalloid in the environment. The influence of simple or complex organic substrates on arsenic bio-oxidation was studied using two bacterial strains: one - the arsenivorans strain of ...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/j.resmic.2019.09.006
更新日期:2020-01-01 00:00:00
abstract::Type IV secretory systems are transmembrane bacterial multiprotein complexes. They are pivotal for conjugation, bacterial-induced plant tumour formation, toxin secretion and mammalian pathogen intracellular activity. These systems are involved in the spread of antibiotic resistance genes among bacteria by enabling con...
journal_title:Research in microbiology
pub_type: 杂志文章,评审
doi:10.1016/s0923-2508(02)01313-x
更新日期:2002-05-01 00:00:00
abstract::Both Neisseria meningitidis and Streptococcus pneumoniae are naturally transformable species and are known to be freely recombining in the wild. Large multilocus sequence typing (MLST) datasets have been generated for these species. Here we outline an approach which exploits these data sets in order to quantify the ex...
journal_title:Research in microbiology
pub_type: 杂志文章,评审
doi:10.1016/s0923-2508(00)00168-6
更新日期:2000-07-01 00:00:00
abstract::Bacteria of the Bacillus cereus group are environmental Gram-positive spore-forming bacteria ubiquitously distributed. Despite the high degree of genetic similarity among the different strains, they show strong phenotypic variability, from mammal or entomopathogen strains to soil-dwelling saprophytes, and from psychro...
journal_title:Research in microbiology
pub_type: 杂志文章,评审
doi:10.1016/j.resmic.2016.07.002
更新日期:2017-05-01 00:00:00
abstract::In Neisseria gonorrhoeae, all penicillinase-specifying plasmids isolated so far share homology with each other and carry a 60% deleted sequence of TnA. Plasmid pHD131, an element isolated from Haemophilus ducreyi and carrying an intact copy of the ampicillin resistance transposable element, was introduced from Escheri...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/0923-2508(90)90016-j
更新日期:1990-06-01 00:00:00
abstract::The trehalose operon of Pseudomonas fluorescens ATCC 17400 consists of treP, treA and treR. The gene treP codes for a putative enzyme II subunit of the phosphotransferase system that catalyzes the phosphorylation of trehalose together with its translocation across the cell membrane and treA encodes a putative phosphot...
journal_title:Research in microbiology
pub_type: 杂志文章
doi:10.1016/s0923-2508(00)01151-7
更新日期:2000-12-01 00:00:00